[citation needed] Maduka worked as a graduate assistant engineer for Western Nigeria Television (WNTV) in Ibadan in 1965.
[citation needed] She was a graduate apprentice in the Engineering Division of Western Nigeria Broadcasting Corporation in Ibadan from 1965 to 1966.
[citation needed] From 1966 to 1970 she was a lecturer in the department of Applied Physics at the University of Ife She joined Leccom Associates, a firm for consulting engineers, in 1970 and became the principal partner there in 1975.
[3] In 1993, Maduka became the founder of Friends of the Environment, an innovation which seeks to improve renewable energy, manage wastes and also empower women.
[8] She also founded the Association of Professional Women Engineers of Nigeria Archived 23 November 2020 at the Wayback Machine (APWEN).